**********The P500-12P is a self-contained amplified subwoofer system featuring a single 12" high output subwoofer in a high output vented enclosure and a built in 500-watt class-D amplifier*****Designed for hatchback, sedan, and SUV applications, the P500-12P can be connected via speaker level inputs for connection to factory systems, or traditional line level inputs for aftermarket systems*****Featuring adjustable 12db/Octave low pass crossover, built-in adjustable bass boost EQ, hi-level/low-level inputs, built-in 0/180 phase switch and includes Remote bass level control*****Precision constructed MDF ported wedge enclosure with heat activated vinyl finish, measuring H x W x D1 x D2 15" x 24.76" x 10.91" x 7.71" *****Famous build quality with a full 1-year warranty when purchased from an authorized reseller